[R-pkg-devel] Can't build package but can load it with devtools::load_all()

devtools::load_all()
Loading Rcppsbml
Error in dyn.load(dllfile) :
  unable to load shared object '/<PATH-TO-DIR>/Rcppsbml/src/Rcppsbml.so':
  dlopen(/<PATH-TO-DIR>/Rcppsbml/src/Rcppsbml.so, 6): Symbol not found:
__ZN7libsbml10SBMLReader16readSBMLFromFileERKNSt3__112basic_stringIcNS1_11char_traitsIcEENS1_9allocatorIcEEEE

Hi

I am trying to build a package with interfaces with C library libSBML
<http://sbml.org/Software/libSBML> (although a package libSBML exists).
When I try to build the package using "Clean and Rebuild" command in
RStudio, I am getting the following error

** R

** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
Error in dyn.load(file, DLLpath = DLLpath, ...) :
  unable to load shared object
'/Library/Frameworks/R.framework/Versions/3.3/Resources/library/Rcppsbml/libs/Rcppsbml.so':

dlopen(/Library/Frameworks/R.framework/Versions/3.3/Resources/library/Rcppsbml/libs/Rcppsbml.so,
6): Library not loaded: libsbml.5.dylib
  Referenced from:
/Library/Frameworks/R.framework/Versions/3.3/Resources/library/Rcppsbml/libs/Rcppsbml.so
  Reason: image not found
Error: loading failed
Execution halted
ERROR: loading failed
* removing
?/Library/Frameworks/R.framework/Versions/3.3/Resources/library/Rcppsbml?
Exited with status 1.

However, if I issue the command

devtools::load_all()

after "Clean and Rebuild" command, I get the message

Loading Rcppsbml


and I can also use the functions defined in the package! However, as soon
as I restart my R session, I cannot load the library (understandable, as I
don't think the package is built correctly).

Based on the error shown, I think libsbml.5.dylib is not being loaded,
however, it is there in the /usr/local/lib folder.

The code for this package can be found at

https://github.com/sn248/Rcppsbml

Any help in resolving this error would be highly appreciated!

Thank you
Satyaprakash Nayak